CN111809783A - Prestressed truss steel bar laminated slab and production method thereof - Google Patents
Prestressed truss steel bar laminated slab and production method thereof Download PDFInfo
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- CN111809783A CN111809783A CN202010810183.9A CN202010810183A CN111809783A CN 111809783 A CN111809783 A CN 111809783A CN 202010810183 A CN202010810183 A CN 202010810183A CN 111809783 A CN111809783 A CN 111809783A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 88
- 239000010959 steel Substances 0.000 title claims abstract description 88
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims description 14
- 239000004567 concrete Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 21
- 238000005452 bending Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/065—Light-weight girders, e.g. with precast parts
- E04C5/0653—Light-weight girders, e.g. with precast parts with precast parts
- E04C5/0656—Light-weight girders, e.g. with precast parts with precast parts with lost formwork
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a prestressed truss steel bar laminated slab, which belongs to the technical field of truss steel bar laminated slabs and comprises a die table and a die, wherein common steel bars and truss steel bars are arranged in the die. The truss reinforcing steel bar comprises an upper chord and a lower chord which are upwards protruded to be arc-shaped, and the upper chord and the two lower chords are arranged in parallel. The top of truss reinforcing bar is provided with a plurality of counter-force roof beam, is provided with the pressure beam with truss reinforcing bar one-to-one on the counter-force roof beam, pressure beam and truss reinforcing bar parallel arrangement, and the both ends of counter-force roof beam are provided with the pull rod, are located and are provided with basket of flowers bolt and strain gage between the adjacent pull rod of the same one end of counter-force roof beam, and the bottom and the mould platform of pull rod are connected. The invention also discloses a production method of the prestressed truss steel bar laminated slab. By adopting the prestressed truss steel bar laminated slab and the production method thereof, the mechanical property of the truss steel bar is fully exerted, the problems of arching and deflection of the existing truss steel bar laminated slab can be solved, and the bending resistance of the laminated slab is improved.
Description
Technical Field
The invention belongs to the technical field of truss steel bar laminated slabs, and particularly relates to a prestressed truss steel bar laminated slab and a production method thereof.
Background
At present, the most common floor form of the prefabricated concrete structure in China is a truss reinforced concrete composite slab. The floor slab mainly comprises precast slabs and concrete superposed layers poured on the upper surfaces of the precast slabs, the precast slabs of the superposed slabs are carried out on a mould platform, the upper surface of the mould platform is a horizontal surface, and the bottom surfaces of the produced precast slabs are also horizontal. The laminated layer is poured on the prefabricated slab after the prefabricated slab is installed to form the floor slab, and a certain amount of downward deflection is generated on the bottom surface of the prefabricated slab after the laminated layer is poured on the prefabricated slab, so that the visual effect of the floor slab is influenced, and the quality and the rigidity of the floor slab are influenced due to the tensile stress or the cracking of the concrete on the bottom layer of the floor slab before the prefabricated slab is formally used.
Disclosure of Invention
The invention aims to provide a prestressed truss steel bar composite slab, which solves the problem that the quality and the rigidity of a floor slab are influenced by downwarping generated after a composite layer is poured in the conventional truss steel bar composite slab. Another object of the present invention is to provide a method for manufacturing a prestressed truss-reinforced composite slab.
In order to achieve the purpose, the invention provides a prestressed truss steel bar laminated slab, which comprises a die table and a die, wherein the die is fixed on the die table, and latticed common steel bars and truss steel bars are arranged in a space surrounded by the die; the truss steel bars comprise upper chords and lower chords which are upwards protruded and arc-shaped, and the upper chords and the two lower chords are arranged in parallel;
the top of truss reinforcing bar is provided with a plurality of and truss reinforcing bar vertically counter-force roof beam, and the length of counter-force roof beam is not more than the width of mould platform, is provided with the pressure beam with truss reinforcing bar one-to-one on the counter-force roof beam, pressure beam and truss reinforcing bar parallel arrangement, and the both ends of counter-force roof beam are provided with the pull rod, are located and are provided with basket of flowers bolt and strain gage between the adjacent pull rod of the same one end of counter-force roof beam, and the bottom and the mould platform of pull rod are.
Preferably, a plurality of web members distributed in a V shape are uniformly arranged between the lower chord and the upper chord, and two ends of each web member are fixedly connected with the upper chord and the lower chord respectively; the two lower chords are connected through a connecting rod, and two ends of the connecting rod are respectively connected with the web members.
Preferably, two ends of each of the two lower chords are connected through a connecting rod, and the connecting rods positioned in the middle of the lower chords are distributed at intervals at the connecting points of the web members and the lower chords.
Preferably, the odd number of reaction beams are arranged above the truss reinforcing steel bars, one reaction beam is arranged in the middle of the truss reinforcing steel bars, and the other reaction beams are symmetrically distributed around the reaction beam in the middle of the truss reinforcing steel bars.
Preferably, the lower surface of the pressure beam is provided with a groove for clamping the top end of the truss reinforcing steel bar.
Preferably, the reaction beam comprises two channel steel fixedly connected with the groove, two ends of the two channel steel are connected through a connecting plate, a sliding groove is formed between the two channel steel, and the pressure beam is connected with the reaction beam through a bolt arranged in the sliding groove.
Preferably, the pull rod is positioned in the sliding groove, and a limiting gasket and a nut are arranged at the top end of the pull rod; the bottom of the pull rod is provided with an external thread matched with a threaded hole arranged on the die table.
Preferably, the length of the pressure beam is not less than 45 cm.
The production method of the prestressed truss steel bar laminated slab comprises the following steps:
s1, manufacturing truss steel bars, welding and fixing an upper web member between an upper chord member and a lower chord member, and connecting and fixing the two lower chord members through connecting rods;
s2, laying steel bars, laying and binding common steel bars and truss steel bars on a mold platform according to design requirements, placing the outer convex ends of the truss steel bars upwards, placing hard plastic cushion blocks under lower chords at two ends of the truss steel bars, uniformly distributing the hard plastic cushion blocks under the lower chords of the truss steel bars according to requirements, laying a mold on the mold platform, fixing the mold on the mold platform through bolts, and penetrating the common steel bars through holes arranged at the bottom of the mold according to requirements;
s3, setting reaction beams, placing reaction beams with required quantity on the truss steel bars according to design requirements, loosening bolts on the pressure beams to adjust the positions of the pressure beams on the reaction beams, enabling the top ends of the truss steel bars to be clamped in grooves formed in the bottoms of the pressure beams, and then tightening the bolts to fix the pressure beams and the reaction beams;
s4, fixing the reaction beam, screwing the pull rods at two ends of the reaction beam into threaded holes formed in the die table, and bolting the pull rods with the die table;
s5, adjusting the reaction beam, rotating the turn buckle, adjusting the tension of the pull rod on the reaction beam to make the value of the stress meter meet the set requirement, and pressing the reaction beam on the top of the truss steel bar through the pressure beam;
s6, pouring concrete;
and S7, curing the concrete, and finally removing the reaction beam, the pressure beam and the pull rod.
The prestressed truss steel bar laminated slab and the production method thereof have the advantages and positive effects that:
1. the upper chord member and the lower chord member of the truss reinforcing steel bar are both provided with upward convex radians, the truss reinforcing steel bar is pressed down through the counter-force beam, so that the pre-tensioning stress is generated inside the truss reinforcing steel bar, after the counter-force beam is removed, the truss reinforcing steel bar is pre-retracted, the compressive stress is generated in the bottom concrete of the laminated slab, and meanwhile, the truss reinforcing steel bar has the tendency of arching upwards, the tensile stress generated by the load when the laminated slab is poured or on the floor slab can be offset by the compressive stress in the bottom concrete of the laminated slab, the smoothness of the lower surface of the laminated slab is improved, and the quality.
2. The web members between the upper chord member and the lower chord member of the truss reinforcing steel bar, the upper chord member and the lower chord member form a triangular structure, and the lower chord members are connected through the connecting rods, so that the rigidity of the truss reinforcing steel bar is improved.
3. The middle part of the reaction beam is provided with a through chute, the bolt and the pull rod for connecting the pressure beam are both positioned in the chute, and the positions of the pressure beam and the pull rod on the reaction beam can be adjusted to adapt to the production requirements of laminated plates with different specifications. The pressure beams are detachably connected with the reaction beams through bolts, so that the number of the pressure beams can be increased or decreased as required, and the requirement of the laminated slab without specifications on the number of the pressure beams is met.
4. The turn buckle bolts are respectively arranged on the pull rods at the two ends of the counter-force beam, so that the stress of the pull rods can be conveniently adjusted. The stress meters respectively arranged on the pull rods can reliably monitor the balance of the counter force provided by the counter-force beams. Providing basis for the prestress value generated in the truss steel bar.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of an installation structure of an embodiment of a prestressed truss steel bar laminated slab and a production method thereof according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a prestressed truss-steel bar composite slab and a method for manufacturing the same according to the present invention;
FIG. 3 is a schematic view of a reaction beam structure of an embodiment of a prestressed truss-steel composite slab and a method for manufacturing the same according to the present invention;
fig. 4 is a schematic view of a truss reinforcement structure of an embodiment of a prestressed truss reinforcement laminated slab and a production method thereof according to the present invention.
Reference numerals
1. A mould table; 2. a mold; 3. ordinary steel bars; 4. truss reinforcing steel bars; 5. a counter-force beam; 6. a pressure beam; 7. a pull rod; 8. a turn buckle; 9. a stress meter; 10. channel steel; 11. a chute; 12. a connecting plate; 13. an upper chord; 14. a lower chord; 15. a web member; 16. a connecting rod.
Detailed Description
Examples
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
Fig. 1 is a schematic view of an installation structure of an embodiment of a prestressed truss steel-bar composite slab and a production method thereof according to the present invention, and fig. 2 is a schematic view of a structure of an embodiment of a prestressed truss steel-bar composite slab and a production method thereof according to the present invention. As shown in the figure, the prestressed truss steel bar laminated slab comprises a die table 1 and a die 2, wherein the die 2 is fixed on the die table 1, the die table 1 and the die 2 adopt the existing structures, and the die 2 is fixed on the die table 1 through screws. The square space enclosed by the mould 2 is internally provided with latticed common steel bars 3 and truss steel bars 4, and the transverse common steel bars 3 and the longitudinal common steel bars 3 are welded or tied together. The truss reinforcement 4 is arranged parallel to the length direction of the mould 2. The number and spacing of the ordinary steel bars 3 and the set number of the truss steel bars 4 are set as required.
Fig. 4 is a schematic view of a truss reinforcement structure of an embodiment of a prestressed truss reinforcement laminated slab and a production method thereof according to the present invention. As shown in the figure, the truss reinforcing steel bar 4 comprises an upper chord 13 and a lower chord 14 which are upwards protruded to form an arc shape, and the upper chord 13 and the two lower chords 14 are arranged in parallel and distributed in a triangular shape. A plurality of web members 15 distributed in a V shape are uniformly arranged between the lower chord 14 and the upper chord 13, and two ends of each web member 15 are respectively fixedly connected with the upper chord 13 and the lower chord 14 in a welding manner. Two adjacent web members 15 and the upper chord 13 or the lower chord 14 form a triangular structure. The two lower chords 14 are connected through a connecting rod 16, and two ends of the connecting rod 16 are respectively located at the welding points of the web member 15 and the lower chords 14 and are fixedly connected with the lower chords 14 in a welding manner. The two ends of the two lower chords 14 are connected through a connecting rod 16, and the connecting rods 16 located in the middle of the lower chords 14 are distributed at intervals at the connecting points of the web members 15 and the lower chords 14, that is, a welding point of the web members 15 and the lower chords 14 is arranged between the adjacent connecting rods 16.
A plurality of counter-force beams 5 vertical to the truss reinforcing steel bars 4 are arranged above the truss reinforcing steel bars 4, and the number of the counter-force beams 5 is odd. The middle part of truss reinforcing bar 4 is provided with a counter-force roof beam 5, and other counter-force roof beams 5 are 5 symmetric distribution about the counter-force roof beam 5 at truss reinforcing bar 4 middle part. The number of the reaction beams 5 is adjusted as necessary. The length of the counterforce beam 5 is not more than the width of the die table 1. The counter-force beam 5 is provided with pressure beams 6 which are in one-to-one correspondence with the truss reinforcing steel bars 4, and the pressure beams 6 are square steel tubes. The pressure beam 6 is arranged in parallel with the truss reinforcing steel bar 4. The lower surface of the pressure beam 6 is provided with a groove for clamping the upper chord 13 at the top end of the truss reinforcing steel bar 4, so that the upper chord 13 is prevented from slipping out of the groove of the pressure beam 6. The length of the pressure beam 6 is not less than 45 cm, so that the pressure beam 6 can cover the welding points of the three web members 15 and the upper chord member 13, and the effect of the pressure beam 6 on the truss steel bars 4 is improved.
Fig. 3 is a schematic structural view of a reaction beam according to an embodiment of a prestressed truss-steel composite slab and a production method thereof. As shown in the figure, the reaction beam 5 includes two channel steels 10 fixedly connected to each other, and two ends of the two channel steels 10 are fixedly connected to each other by welding via a connecting plate 12. A chute 11 is arranged between the two channel steels 10, and the pressure beam 6 is connected with the reaction beam 5 through bolts arranged in the chute 11. The top of the pressure beam 6 is provided with a threaded hole for inserting a bolt, the bolt is rotated, the end head of the bolt is tightly pressed on the counter-force beam 5 through a gasket, and the time counter-force beam 5 is fixed with the pressure beam 6. The two ends of the reaction beam 5 are provided with pull rods 7, a turn buckle 8 and a stress meter 9 are arranged between the adjacent pull rods 7 at the same end of the reaction beam 5, the two ends of the turn buckle 8 are respectively connected with the two pull rods 7, and the two ends of the stress meter 9 are connected with the adjacent pull rods 7. The bottom of the pull rod 7 positioned at the lowest end is provided with an external thread matched with the threaded hole arranged on the die table 1, and the pull rod 7 is screwed into the threaded hole on the die table 1 to connect the counter-force beam 5 with the die table 1.
The topmost tie rod 7 is located within the chute 11, the tie rod 7 having a diameter less than the width of the chute 11 so that the tie rod 7 can slide within the chute 11. The top end of the pull rod 7 is provided with a spacing gasket and a nut, so that the pull rod 7 is prevented from falling off from the sliding groove 11.
The pull force of the pull rod 7 on the counter-force beam 5 is adjusted by rotating the turn buckle 8, and the counter-force beam 5 applies downward pressure on the truss steel bars 4 through the pressure beam 6, so that stress exists in the truss steel bars 4; after the maintenance is completed, the counter-force beam 5 and the pressure beam 6 are detached, and the poured concrete has the tendency of upwarping under the stress action of the truss reinforcing steel bars 4, so that the downwarping when the laminated layer is partially poured can be balanced, a relatively smooth laminated slab is obtained, and the quality and the rigidity of the laminated slab are improved.
The production method of the prestressed truss steel bar 4 laminated slab comprises the following steps:
and S1, manufacturing truss reinforcing steel bars 4, welding and fixing the upper web members 15 between the upper chord members 13 and the lower chord members 14, and connecting and fixing the two lower chord members 14 through connecting rods 16.
S2, paving steel bars, paving and binding common steel bars 3 and truss steel bars 4 on a mold platform 1 according to design requirements, placing the outer convex ends of the truss steel bars 4 upwards, placing rigid plastic cushion blocks under lower chords 14 at two ends of the truss steel bars 4, uniformly distributing the rigid plastic cushion blocks under the lower chords 14 of the truss steel bars 4 according to requirements, then paving a mold 2 on the mold platform 1, fixing the mold 2 on the mold platform 1 through bolts, and penetrating the common steel bars 3 through holes formed in the bottom of the mold 2 according to requirements.
S3, setting the reaction beams 5, placing the reaction beams 5 with required quantity on the truss steel bars 4 according to design requirements, loosening the bolts on the pressure beams 6 to adjust the positions of the pressure beams 6 on the reaction beams 5, enabling the top ends of the truss steel bars 4 to be clamped in the grooves formed in the bottoms of the pressure beams 6, and then tightening the bolts to fix the pressure beams 6 and the reaction beams 5.
And S4, fixing the reaction beam 5, and screwing the pull rods 7 at the two ends of the reaction beam 5 into the threaded holes arranged on the die table 1 so as to bolt the pull rods 7 with the die table 1.
And S5, adjusting the reaction beam 5, rotating the turn buckle 8, adjusting the tension of the pull rod 7 on the reaction beam 5 to enable the value of the stress gauge 9 to reach the set requirement, and pressing the reaction beam 5 on the top of the truss steel bar 4 through the pressure beam 6.
And S6, pouring concrete.
And S7, curing the concrete, and finally removing devices such as the reaction beam, the pressure beam, the pull rod and the like.
Therefore, the prestressed truss steel bar composite slab and the production method thereof can solve the problem that the quality and the rigidity of a floor slab are influenced by downwarping generated after the composite layer is poured in the conventional truss steel bar composite slab.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (9)
1. A prestressed truss steel bar laminated slab comprises a die table and a die, wherein the die is fixed on the die table, and latticed common steel bars and truss steel bars are arranged in a space surrounded by the die; the method is characterized in that: the truss steel bars comprise upper chords and lower chords which are upwards protruded and arc-shaped, and the upper chords and the two lower chords are arranged in parallel;
the top of truss reinforcing bar is provided with a plurality of and truss reinforcing bar vertically counter-force roof beam, and the length of counter-force roof beam is not more than the width of mould platform, is provided with the pressure beam with truss reinforcing bar one-to-one on the counter-force roof beam, pressure beam and truss reinforcing bar parallel arrangement, and the both ends of counter-force roof beam are provided with the pull rod, are located and are provided with basket of flowers bolt and strain gage between the adjacent pull rod of the same one end of counter-force roof beam, and the bottom and the mould platform of pull rod are.
2. The prestressed truss rebar laminate of claim 1, wherein: a plurality of web members distributed in a V shape are uniformly arranged between the lower chord and the upper chord, and two ends of each web member are fixedly connected with the upper chord and the lower chord respectively; the two lower chords are connected through a connecting rod, and two ends of the connecting rod are respectively connected with the web members.
3. The prestressed truss rebar laminate of claim 2, wherein: two ends of the two lower chords are connected through a connecting rod respectively, and the connecting rods positioned in the middle of the lower chords are distributed at the connecting points of the web members and the lower chords at intervals.
4. The prestressed truss rebar laminate of claim 1, wherein: the top of truss reinforcing bar is provided with odd number counter-force roof beam, and the middle part of truss reinforcing bar is provided with a counter-force roof beam, and other counter-force roof beams are around the counter-force roof beam symmetric distribution in truss reinforcing bar middle part.
5. The prestressed truss rebar laminate of claim 1, wherein: and a groove for clamping the top end of the truss steel bar is arranged on the lower surface of the pressure beam.
6. The prestressed truss rebar laminate of claim 1, wherein: the reaction beam comprises two channel steel fixedly connected with the groove, the two ends of the two channel steel are connected through a connecting plate, a sliding groove is formed between the two channel steel, and the pressure beam is connected with the reaction beam through a bolt arranged in the sliding groove.
7. The prestressed truss rebar laminate of claim 6, wherein: the pull rod is positioned in the sliding groove, and a spacing gasket and a nut are arranged at the top end of the pull rod; the bottom of the pull rod is provided with an external thread matched with a threaded hole arranged on the die table.
8. The prestressed truss rebar laminate of claim 1, wherein: the length of the pressure beam is not less than 45 cm.
9. A method for producing a prestressed truss-steel composite slab as claimed in any one of claims 1 to 8, wherein: the method comprises the following steps:
s1, manufacturing truss steel bars, welding and fixing an upper web member between an upper chord member and a lower chord member, and connecting and fixing the two lower chord members through connecting rods;
s2, laying steel bars, laying and binding common steel bars and truss steel bars on a mold platform according to design requirements, placing the outer convex ends of the truss steel bars upwards, placing hard plastic cushion blocks under lower chords at two ends of the truss steel bars, uniformly distributing the hard plastic cushion blocks under the lower chords of the truss steel bars according to requirements, laying a mold on the mold platform, fixing the mold on the mold platform through bolts, and penetrating the common steel bars through holes arranged at the bottom of the mold according to requirements;
s3, setting reaction beams, placing reaction beams with required quantity on the truss steel bars according to design requirements, loosening bolts on the pressure beams to adjust the positions of the pressure beams on the reaction beams, enabling the top ends of the truss steel bars to be clamped in grooves formed in the bottoms of the pressure beams, and then tightening the bolts to fix the pressure beams and the reaction beams;
s4, fixing the reaction beam, screwing the pull rods at two ends of the reaction beam into threaded holes formed in the die table, and bolting the pull rods with the die table;
s5, adjusting the reaction beam, rotating the turn buckle, adjusting the tension of the pull rod on the reaction beam to make the value of the stress meter meet the set requirement, and pressing the reaction beam on the top of the truss steel bar through the pressure beam;
s6, pouring concrete;
and S7, curing the concrete, and finally removing the reaction beam, the pressure beam and the pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010810183.9A CN111809783A (en) | 2020-08-13 | 2020-08-13 | Prestressed truss steel bar laminated slab and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010810183.9A CN111809783A (en) | 2020-08-13 | 2020-08-13 | Prestressed truss steel bar laminated slab and production method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111809783A true CN111809783A (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010810183.9A Pending CN111809783A (en) | 2020-08-13 | 2020-08-13 | Prestressed truss steel bar laminated slab and production method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248221A (en) * | 2020-10-26 | 2021-01-22 | 渝建建筑科技集团有限公司 | Construction method of fabricated floor |
| CN112497440A (en) * | 2020-12-02 | 2021-03-16 | 范文祥 | Production and manufacturing die for laminated floor slab |
-
2020
- 2020-08-13 CN CN202010810183.9A patent/CN111809783A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248221A (en) * | 2020-10-26 | 2021-01-22 | 渝建建筑科技集团有限公司 | Construction method of fabricated floor |
| CN112248221B (en) * | 2020-10-26 | 2022-02-11 | 渝建建筑科技集团有限公司 | Construction method of fabricated floor |
| CN112497440A (en) * | 2020-12-02 | 2021-03-16 | 范文祥 | Production and manufacturing die for laminated floor slab |
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Application publication date: 20201023 |